docs: add knowledge base

docs/kb_sections/dzg001.adoc

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+[[DZG-001, DZG-001]]
+== DZG-001: Periodically getting dropped from servers, or servers appear unreachable
+Last updated: {d}
+
+It is a longstanding issue in DayZ that the game opens a large number of connections when querying servers and/or while connected to servers. This can result in excess traffic on the user's PC which, depending on how much headroom your network has, can lead to getting dropped, unresponsiveness, or a timeout.
+
+If you are on Wi-Fi, try switching to a wired connection and see if the problem resolves itself. If it does, your wireless router settings do not have enough headroom for max simultaneous connections. Use a wired connection, or update your network settings to a more permissive setup.
+
+Bohemia has acknowledged this issue going back 10+ years and stated that DayZ has a heavy impact on the network, but there is as yet no proposed solution on the DayZ side.
+
+This issue is frequently seen on Steam Deck, due to the tendency for users to use it in an untethered Wi-Fi setup.